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resolv: Move dn_expand to its own file and into libc

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And reformat to GNU style.

This switches back to the dn_expand name for the ABI symbol and turns
__dn_expand into a compatibility symbol.  With the improved namespace
management in current glibc, it is no longer necessary to use a
private namespace symbol.  To avoid old code binding to a
GLIBC_PRIVATE symbol by accident, use __libc_dn_expand for the
internal symbol name.

The symbols dn_expand, __dnexpand were moved using
scripts/move-symbol-to-libc.py, followed by an adjustment to make
dn_expand the only GLIBC_2.34 symbol.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Tested-by: Carlos O'Donell <carlos@redhat.com>
This commit is contained in:
Florian Weimer
2021-07-19 07:55:27 +02:00
parent 13e1f86706
commit 640bbdf71c
76 changed files with 219 additions and 90 deletions
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2
sysdeps/unix/sysv/linux/arc/libc.abilist
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@ -166,6 +166,7 @@ GLIBC_2.32 __daylight D 0x4
GLIBC_2.32 __dcgettext F
GLIBC_2.32 __default_morecore F
GLIBC_2.32 __dgettext F
GLIBC_2.32 __dn_expand F
GLIBC_2.32 __dprintf_chk F
GLIBC_2.32 __dup2 F
GLIBC_2.32 __duplocale F
@ -2190,6 +2191,7 @@ GLIBC_2.34 dlmopen F
GLIBC_2.34 dlopen F
GLIBC_2.34 dlsym F
GLIBC_2.34 dlvsym F
GLIBC_2.34 dn_expand F
GLIBC_2.34 execveat F
GLIBC_2.34 forkpty F
GLIBC_2.34 gai_cancel F

1
sysdeps/unix/sysv/linux/arc/libresolv.abilist
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@ -2,7 +2,6 @@ GLIBC_2.32 __b64_ntop F
GLIBC_2.32 __b64_pton F
GLIBC_2.32 __dn_comp F
GLIBC_2.32 __dn_count_labels F
GLIBC_2.32 __dn_expand F
GLIBC_2.32 __dn_skipname F
GLIBC_2.32 __fp_nquery F
GLIBC_2.32 __fp_query F